Improvement in apparatus for preserving wood



H. G. MGGUNEGAL.

Apparatus for Preserving Wood. 7

94 140520 Patentedlulyl,l873.

Fig. 2.

AM PHUTO'LIIHOERAPIIIC camflossumvs's M00535).

UNITED STATES PATENT OFFICE.

HENRY G. MOGONEGAL, OF WASHINGTON, DISTRICT OF COLUMBIA.

IMPROVEMENT IN APPARATUS FOR PRESERVING WOOD.

Specification forming part of Letters Patent No. 140,520, dated July 1, 1873; application filed May 20, 1873.

To all whom 'itonayconcern:

Be it known that I, HENRY G. MoGoNE- GAL, of Washington, in the District of Columbia, have invented an Apparatus for Treating Wood with Chemical Substances, &c., to preserve it from decay, of which the following is a specification:

This invention belongs to that class of devices used for the purpose of Kyanizing, Burnettizin g, or treating wood with chemical substances to prevent its decay; and it consists, first, in mounting the treating cylinder or tank upon trunnions or supports in such manner as that it may be easily tilted in a proper position to receive the charge of wood at one end by simply dropping it into the tank, and then be discharged by turning the mouth of the tank downward to such a point as that the contents will drop out of it; and, second, the invention also consists in combining the treating-tank with chutes or hoppers, so that the wood can be readily guided from the saws ormachines where it is shaped into the treating-tank, and when treated can be guided from the tank to the carts or wagons for removal without the necessity of handling it.

Figure 1 is a side elevation of .the entire apparatus; Fig. 2, a top view of the same; Fig. 3, an end view of the mouth of the treatingtank.

The treating-tank is shown at A, consisting of a cylinder of sufficient size and strength to receive the desired charge, and to sustain the pressure due to the weight of the wood, and the exhaustion required in the operation of treatment. It is here represented as made of sheet metal, as boiler-plate, and joined by the several sections being lapped and riveted, and

said tank is mounted upon a suitable framework, as shown at B, by being pivoted or supported by the trunnions O U, which are attached to opposite sides of the tank in any well-known manner, and are provided with bearings in the upper portions of the frame B. Upon one side of the tank is fastened a segment of a gear-wheel, as shown at D, which engages with a pinion on a crank-shaft, as at E, and which is also mounted in the frame B, so that by simply turning the crank or pinion E tank A will be tilted, as desired, upon its trunnions O O, and one end of said tank may be elevated, as shown at Fig. 1, to near the lower end of a chute, as at F, said chute or hopper or table being mounted on a frame work or supports, and at an inclination of such a degree that when the gate, as at G, upon the lower end of the chute, is opened the pieces of wood will slide, by their weight or with but little assistance, into the tank, the cover thereof being removed by releasing the screw-bolts and sliding them out of the way through the slots, as seen at Fig. 3. This chute F may be arranged upon the side of a hill, so that the wood may be conveyed horizontally to it or, in the case of making blocks for paving purposes, elevators may be provided to carry the blocks up from the saws to the chute, and the apparatus may then be placed on level ground.

After the wood has been treated the tank A may then be tilted to bring its mouth down, as shown by the dotted outline of the tank in v Fig. 1; so that its contents may be dumped onto the second chute or inclosed platform, as at H, under-which the carts or wagons may drive to receive their loads, and thereby dispense with the necessity or labor of handling the blocks, as now required.

To permit the tilting of the tank, as required, the connections with the exhausting apparatus and the reservoirs or pumps, as the case may be, for changing the chemicals are made with flexible hose, as shown at K and L; or the connectionsmay be made through the trunnions 0 (J, of metal pipes or tubes.

The frame-work B may also be mounted on casters, or on a central pivot or axis, so that the tank may be swung around from the receiving-chute to some other point, not in the same plane as here shown, to be dumped or emptied-as, for example, where the appara tus is placed on the side of a hill or sloping ground, the upper chute may lead the material to the tank, and then the lower chute may be placed on the opposite side or lower ground, and in such case the tank would require to be turned one-half revolution on its vertical axis or base.

It is evident that the other devices for tilt ing the tank may be used, instead of the gearing here shown, as a block and tackle or pul ley-block, of some sort; but

I claim-- mounted upon a verticai axis or support, by which it may be swung around to any desired point, as described, and for the purposes set forth.

HENRY G. MGGONEGAL.

Witnessesi E. N. ELIOT, BOYD ELIOT. 

